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© 2016 Axia Audio - Rev 2.0
GPIO Producer’s Microphone Logic
Name
Pin
Type
Notes
INPUTS
ON Command
11
Active Low Input
Turns channel ON
OFF Command
12
Active Low Input
Turn channel OFF
TALK (to MONITOR 2)
Command
13
Active Low Input
Activates the TALK to MON2
function and routes mic audio
to the Talkback bus.
MUTE Command
14
Active Low Input
Mutes channel outputs
TALK (to PREVIEWED
SOURCE) Command
15
Active Low Input
Activates the TALK button
on every source currently in
Preview and routes mic audio
to the Talkback bus.
OUTPUTS
ON Lamp
1
Open Collector to Logic Com-
mon Return
Illuminates when channel is
ON unless TALK or MUTE is
active
OFF Lamp
2
Open Collector to Logic Com-
mon Return
Illuminates when channel is
OFF
TALK (to MONITOR 2) Lamp
3
Open Collector to Logic Com-
mon Return
Illuminates when TALK to
MON2 is active.
MUTE Lamp
4
Open Collector to Logic Com-
mon Return
Illuminates when MUTE is
active
TALK (to PREVIEWED
SOURCE) Lamp
5
Open Collector to Logic Com-
mon Return
Illuminates when TALK to
PREVIEWED SOURCE is
active.
POWER & COMMON
Source Common
7
Logic Common
Connect to ground of source
device or to Pin 8
Logic Common
8
Internal 5 Volt return
Can be connected to Pin 7
if source is not providing
common
Logic + 5 Volt supply
9
Logic Supply, Individually
Fused
Can be connected to Pin 10 if
source is not providing volt-
age; active only when source
has been assigned to channel.
Source Supply
10
Common for all 5 inputs
Connect to power supply of
source device or to Pin 9
NOT CONNECTED
6
8 7 6 5 4 3 2 1
15 14 13 12 11 10 9
ØV (GND)
SOURCE
OUTPUT
COMMON
RETURN
OUT
5
OUT
2
OUT
3
OUT
4
OUT
1
N/C
IN
5
IN
4
IN
3
IN
2
IN
1
IN
COM
+
+5 V
POWER
SOURCE
GPIO v.”ZA” 4/2009
